2,977 people died on 9/11—but the tragedy didn’t end that day. Since then, over 3,000 people have died from Ground Zero-related illnesses, including 409 FDNY firefighters—more than died on the day itself. Niels Jorgensen was part of a whole Army of Normal Folks who put their own lives at risk by volunteering to clean up Ground Zero for 8 months and he contracted the rarest form of leukemia that nearly killed him. This episode reveals the part of 9/11 that most Americans have never been told: it’s still claiming lives.